G. Blevins/G. Brady
Review the following slides which contain the various types of connective tissue. Make sure you can identify each type of tissue and identify its component parts. Also learn locations in the body where each tissue can be found and the functions for each type of connective tissue.
True or Proper
Connective Tissue:
Areolar
Tissue:
Slide 4: Areolar Tissue Found underlying most epithelial tissue, forms the papillary region of the dermis and a layer called the Lamina Propria of the Digestive Tract that is found just underlying the epithelium. In this slide, the areolar tissue is part of the serous membrane.
Make sure you can identify the three types of fibers (collagen, elastic, and reticular) and dominant cells (fibroblasts or fibrocytes)
Slide 13: Scalp View the papillary region of the dermis just deep to the stratified squamous observed during the last lab. Appears as a thin broken pink layer with upward folds.
Slide 64: Small Intestine View the Lamina Propria just deep to the simple Columnar epithelium tissue you observed during the last lab. The areolar tissue also extends upward into the villi or folds. Tissue appears as a thin broken pink layer.
Slide 57: Esophagus Observe the 1st layer deep to the to the nonkeratinized Squamous epithelium you observed in the last lab. This layer is called the Lamina Propria. Appears as a thin dense layer of pink fibers.
Adipose
tissue:
Slide 5 Find the nucleus and large vacuole for storing fat or triglycerides. Cells appear very transparent with light pink plasma membranes. The fats have been removed from this slide giving you the very transparent appearance.
Slide 13: scalp Example of hairy skin; observe the hypodermis, deepest layer of the tissue sample.
Slide 14: Meissner’s Example of non-hairy skin from a finger tip, again observe
Corpuscle the hypodermis which is the deepest layer at the lower surface.
Slide 8: Elastic Cartilage Section through the Epiglottis, look for areas of adipocytes.
Slide 40: Nerve/artery/vein Fat cells or adipocytes will be oberserved surrounding all three structures.
Reticular
Tissue:
Slide 52: Spleen Observe the reticular fibers that create the structural framework. Seen as light pink fibers between cells.
Dense
Slide 6: White Fibrous Tissue sample is from a muscle tendon. Note that collagen
Tissue fibers on all oriented in the same direction, which is way this tissue is called Regular. You will also observe nuclei of fibrocytes between fibers. Fibers should appear as light pink thick fibers.
Dense
Slide 13:
Scalp Observe
the Dermis of the skin, Look for the third layer just deep to the papillary
layer you observed before. Note that collagen
fibers are oriented in multiple directions.
Nuclei of fibrocytes may not be very
visible. Collagen will appear as dark
pink fibers.
Slide 57: Esophagus Observe the third layer deep to
the nonkeratinized Squamous
epithelium observed during last lab.
This layer is called the submucosa. Fibers
appear as light pink fibers and are somewhat broken up. Collagen will again be
oriented on multiple planes.
Supportive Connective Tissue:
Hyaline
Cartilage:
Slide 7: Hyaline Cartilage Note dense matrix dominated by collagen fibers. Individual fibers are not observed because of the density of the matrix. Spaces on the matrix are called Lacuna and will contain the cells, Chondroblasts or Chondrocytes, common of cartilage. Matrix can appear dark purple or dark pink depending on the stain used
Slide 68: Trachea (Same as above)
Fibrocartilage:
Slide 9: White Fibro- Note the visible collagen fiber in the matrix, lacuna and
Cartilage “Chondroblasts” or “Chondrocytes.” This is a slide through the intervertebral disc. Collagen fibers appear light pink. Tissue is usually stained darker near the edge of the tissue block on the slide.
Elastic
cartilage:
Slide 8: Elastic Cartilage Observe the visible elastic fibers in the matrix, lacuna and
“Chondroblasts” or “Chondrocytes.” Tissue sample on this slide is from a section through the epiglottis. Collagen fibers will appear dark purple. Also note adipocytes embedded in tissue and the nonkeratinized squamous epithelium that covers the surface of the tissue block.